walton



(No Model.) 2 Sheets-Sheet 1.

W. R. WALTON.

MACHINE FOR CONTRACTING THE END OF A TUBE.

1m 324,507. Patented Aug. 18, 1885 am V WWW.

- w QZZ/ZZQW 21SheetsSheet 2.

(No Model.)

W. R. WALTON.

I MACHINE FOR CONTRACTING THE END OF A TUBE. No. 324,507.

Patented Aug. 18, 1885.

N, PETERS. Finale-Lithographer. Wlihmgum. a c,

UNITED STATES.

PATENT EEicE.

I WILLIAM R. WALTON, OF ANSONIA, CONNECTICUT, ASSIGNOR TO THE ANSONIABRASS AND COPPER COMPANY, OF sAME PLACE.

MACHINE FOR CONTRACTING THE END OF-A TUBE.

EBPECIIEICATIQN forming part of Letters Patent No. 324,507, dated 18,1885.

Application filed June 4, 1885.

- To all whom, it may concern:

Be it known that I, WVILLIAM R. WALTON,

of Ansonia, in the county of New Haven and State of Connecticut, haveinvented an Iniprovement in Swaging-Machines, ofwhich the following is aspecification.

In the manufacture of seamless tubes of copper, brass, and other metalsit is necessary to compress one end of the tube sufficiently to allow ofthe insertion of the same through the die of the draw-bench.

My present machine is adapted to perform this operation, and by itspeculiar construction I am enabled to' change the dies with facility andrapidity, and to use a number of dies upon one machine, so as to beadapted to the different sizes of pipe that are being manufactured.

In the drawings, Figure 1 is an elevation with portions of the dies andfollowers in section. Fig. 2 is a plan view. Fig.3 is a section at theline 00 x, and Fig. 4 is a section at the line y y.

The legs or bedplates A B are adapted to support the machine, and acrossbetween the same is a casting in. the form of a vertical plate or frame,0, ribbed at the bottom, as at O, and also having near the ends thebuttress ribs C to support the plate 0 rigidly. In this plate 0 is arange of openings for the reception of the swaging-dies, hereinafterdescribed, and upon the top edgethereof there is a range of cylindricalopenings for the reception of helical springs and plungers, hereinafterde scribed; and said frame 0 extends upwardly at its ends to form thepillow-blocks 0*, that receive the main shaft D, upon which is adriving-pulley, D, for rotating said shaft. There may be any desirednumber of swagingdies-in the range. I have, however, shown eight. Thesedies may varyinsize, and the openings in the frame or plate 0 for thereception of such dies also vary in size. EX- cept in the matter ofsize, one swaging-die is the counterpart of the other. I will there-'fore describe the construction and mode of operation of one swaging-dieand the parts which actuate the same The lower half, 6, of theswaging-die is received into the opening provided for it in the frame orplate 0, and it remains stationary therein. The upper eccentrics.

(No model.)

part, i, of the swaging-die is also received into the same opening inthe frame 0, and the adjacent surfaces of these dies are recessedsemicircularly and taper, or are flaring toward one end, so as to be.adapted to the reception of the tube and the compressing of the same toa smaller size by a reciprocating motion communicated to the die i. Theplunger K passes vertically down through the hole in the frame 0, beforementioned, and its lower end is reduced to form ashoulder resting uponthe top of the die 2', the plunger itself entering a hole in the die 2'and'being secured by a cross pin or key, 1. Within the holes or recessesin the upper surface of the frame 0 are the helical springs N, that actagainst the under sides of the heads of the plnngers K to lift them andthe dies 3, to which they are connected. Each pair of swaging-dies e i,the follower, and the helical spring are the same, except as to size,throughout the range of swaging-dies introduced into the machine, and nofurther description of the separate sets of dies and plunger-s isnecessary. Each plunger is acted upon by an eccentric or cam, 0, uponthe shaft D, there being as many cams or eccentrics as there are pairsof dies in the swaging-machine, and these cams or eccentrics arepreferably placed upon the shaft so as to act in succession.

In the shaft D a longitudinal -key seat is planed for the reception ofthe separate keys 8, and in the eccentrics 0 there are correspondingkey-seats, and between these keys 8 there are filling-pieces t, thebases of which pass into the longitudinal groove in the shaft 1), andthese filling-pieces t are held by screws passing through them into theshaft D, and these filling-pieces t extend along over the keys, so thattheir ends come against the sides of the By this construction the keys 8and the eccentrics O are held'in their proper position upon the shaft D;but if any one or more pairs of swaging-dies are out of use, they can beallowed to remain stationary by simply removing two or more of thefilling-pieces t and taking out one or more of the keys 8, thus allowingthe swaging-dies so disconnected to remain stationary for either repairsor to avoid unnecessary wear, the shaft D actuating the otherswaging-dies.

With the aging-dies that are adapted to the smaller sizes of tubes it ispreferable to apply upon the upper ends of the plungers K cradlepiecesa, that receive rollers 2), against which the eccentrics O operate, andwith the larger swaging-dies it is preferable to surround the eccentricO with a ring 0, between which and the eccentric are anti-frictioncylindrical rollers O. This ring 0 rests against the bearing-block O" atthe top of the plunger K, and the eccentric and its anti-frictionrollers revolve around within such ring 0. The antii'rietion rollers arekept in place by end plates or rings, 8 bolted to the eccentric.

In either form of construction the eccentrics or cams communicate to theplunger K and dies 17 a downward movement, and the springs N raise theplunger and dies and cause the plunger to remain in contact with theeccentrics or cams during their revolution, and the attendant introducesthe end of the tube be tween a pair of dies, 0 2', adapted to act uponthe same, and he revolves the said tube during the swaging operationuntil the proper length of tube has been reduced to a size that willpass through the die in the draw bench.

I make use of the auxiliary central frame and suppor 0*, with ajournal-box to sustain the shalt 1) near the middle of its length.

To retain the dies at in place, I provide the movable guide-platesf,bolted at top and bottom to the frame (J, and lapping at their edgessutlieiently over such swaging dies 0 i to retain them firmly in place,but to allow the die to slide up and down. these plates thecorresponding dies 0 i can be removed for repairs or otherwise withoutdisturbing any other part of the machine.

I claim as my invention 1. The combination, with a range ofswaging-dies, e i, and the plungers K for actuating the same. of theframe 0, having openings to receive the dies and plnngers, thedrivingshaft D, the eccentrics or cams O, and the springs for raisingthe plungers and upper dies, substantially as set forth.

2. The combination, with the range of swaging-dies, the plungers,springs, cams or ec' centrics, and main shaft for actuating the same, ofthe frame 0, having openings to rek ceive the swaging-dies, plungers,and springs. and the plates f, bolted to the surface of the frame 0, andadapted to be removed for giving access to the swaging-dies,substantially as set forth.

Signed by me this 29th day of May, A. D. 1885.

\VILLIAM R. \VALTON.

Witnesses:

L. H. HOLMES, A. S. TERRY.

By removing two of 3 5

